EP3236948A1 - Combination of raf inhibitors and aurora kinase inhibitors - Google Patents
Combination of raf inhibitors and aurora kinase inhibitorsInfo
- Publication number
- EP3236948A1 EP3236948A1 EP15874329.4A EP15874329A EP3236948A1 EP 3236948 A1 EP3236948 A1 EP 3236948A1 EP 15874329 A EP15874329 A EP 15874329A EP 3236948 A1 EP3236948 A1 EP 3236948A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cancer
- raf
- pharmaceutically acceptable
- acceptable salt
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
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Definitions
- This disclosure relates to methods for the treatment of cancer.
- the disclosure provides methods for treatment of cancer by administering Raf inhibitors in combination with Aurora kinase inhibitors.
- Cancer is characterized by uncontrolled cell reproduction. Uncontrolled cell reproduction results from the deregulation of the normal processes that control cell division, differentiation and apoptotic cell death.
- Mitosis is a stage in the cell cycle during which a series of complex events ensure the fidelity of chromosome separation into two daughter cells. Mitotic progression is largely regulated by proteolysis and by phosphorylation events that are mediated by mitotic kinases.
- Aurora kinase family members e.g., Aurora A, Aurora B regulate mitotic progression through modulation of centrosome separation, spindle dynamics, spindle assembly checkpoint, chromosome alignment/segregation, and cytokinesis.
- Aurora kinases Overexpression and/or amplification of Aurora kinases have been linked to oncogenesis in several tumor types including those of colon and breast. Moreover, Aurora kinase inhibition in tumor cells results in mitotic arrest and apoptosis, suggesting that these kinases are important targets for cancer therapy.
- Protein kinases also play a critical role in the cell reproduction process.
- a partial non-limiting list of such kinases includes abl, ATK, bcr-abl, Blk, Brk, Btk, c-kit, c-met, c-src, CDK1, CDK2, CDK4, CDK6, cRafl, CSF1R, CSK, EGFR, ErbB2, ErbB3 5 ErbB4, ERK, Fak, fes, FGFR1, FGFR2, FGFR3, FGFR4, FGFR5, Fgr, FLK4, flt-l, Fps, Frk, Fyn, Hck, IGF-1R, INS-R, Jak, KDR, Lck, Lyn, MEK, p38, PDGFR, PIK, PKC, PYK2, ros, tiel, tie2, TRK, Yes and Zap70.
- such protein kinases comprise mitogen activator, kin
- the MAPK signaling pathway consists of a kinase cascade that relays extracellular signals to the nucleus to regulate gene expression and key cellular functions.
- Gene expression controlled by the Ras/Raf MEK ERK signaling pathway regulates fundamental cellular processes including proliferation, differentiation, apoptosis, and angiogenesis. These diverse roles of Ras Raf/MEK/ERK signaling are aberrantly activated in various types of cancer. Mutations in genes within this pathway may lead to constitutively active proteins resulting in increased cell proliferation, and resistance to apoptosis.
- Raf a serine/threonine-protein kinase
- B-Raf a gene family consisting of three genes affording three Raf isoform members B-Raf, C-Raf (Raf-1) and A-Raf).
- B-Raf a serine/threonine-protein kinase
- C-Raf Raf-1
- A-Raf A-Raf
- B-Raf has been shown to be the main activator of MEK. B-Raf is recruited by Ras:GTP to the intracellular cell membrane where B-Raf becomes activated. In turn, B-Raf is responsible for activation of MEK1/2 and MEKl/2 activate
- B-Raf Mutations in the B-Raf gene allow for B-Raf to signal independently of upstream signals. As a result, mutated B-Raf protein (such as V600E) causes excessive downstream signaling of MEK and ERK. This leads to excessive cell proliferation and survival and oncogenesis. Overactivation of the signaling cascade by mutated B-Raf has been implicated in multiple malignancies. B-Raf specific inhibitors (such as vemurafenib) are in fact, showing promise for the treatment of melanomas that express mutant B-Raf V600E, however the emergence of resistant disease is a growing concern.
- Combinations with a Raf inhibitor active that inhibits more isoforms of Raf proteins than B-Raf V600E mutation could be helpful for the treatment of cancer, and might potentially even overcome the resistance to a particular anticancer agent.
- combinations of a Raf inhibitor with an Aurora kinase inhibitor might be particularly effective.
- Combinations of a Raf inhibitor with an Aurora kinase inhibitor may have additive, or even synergistic, therapeutic effects.
- the present disclosure relates to methods of treating a subject suffering from cancer, comprising administering to the subject a Raf kinase inhibitor or a pharmaceutically acceptable salt thereof; and an Aurora kinase inhibitor or a pharmaceutically acceptable salt thereof; the amount of said Raf kinase inhibitor or a pharmaceutically acceptable salt thereof being such that the combination thereof is therapeutically effective in the treatment of the cancer.
- the cancer is a solid tumor cancer.
- the cancer is a hematological malignancy.
- the cancer is a B-Raf mutation-positive cancer.
- the cancer is a NRAS mutation- positive cancer.
- the cancer is selected from skin cancer, ocular cancer, gastrointestinal cancer, thyroid cancer, breast cancer, ovarian cancer, central nervous system cancer, laryngeal cancer, cervical cancer, lymphatic system cancer, genitourinary tract cancer, bone cancer, biliary tract cancer, endometrial cancer, liver cancer, and colon cancer.
- the Raf kinase inhibitor is Compound A or a pharmaceutically acceptable salt thereof.
- the Aurora kinase inhibitor is alisertib or a pharmaceutically acceptable salt thereof.
- the Aurora kinase inhibitor is sodium alisertib.
- the present disclosure relates methods of treating a subject suffering from cancer, comprising administering to the subject Compound A or a pharmaceutically acceptable salt thereof; and alisertib or a pharmaceutically acceptable salt thereof; the amount of said Compound A and alisertib or a
- Compound A or a pharmaceutically acceptable salt thereof being such that the combination thereof is therapeutically effective in the treatment of the cancer.
- Compound A or a pharmaceutically acceptable salt thereof is administered once weekly (QW) with a rest period of 6 days between each administration in an amount of up to 600 mg mg per dose and the alisertib or a pharmaceutically acceptable salt thereof is administered on days 1, 3, 5, 8, 10, 12, 15, 17, 19, 22, 24, and 26 of a 28-day cycle in an amount of from about 30 mg to about 50 mg per dose given twice daily.
- Figure 1 is a graph that shows the mean tumor volume over time for Compound A at 12.5 mg/kg QD, administered alone and in combination with alisertib in S -MEL-2 melanoma xenograft model (NRAS mutant).
- Figure 2 a graph that shows the mean tumor volume over time for Compound A at 50.0 mg kg BIW, administered alone and in combination with alisertib in SK-MEL-2 melanoma xenograft model (NRAS mutant).
- Figure 3 is a graph that shows the mean tumor volume over time for Compound A at 12.5 mg kg QD, administered alone and in combination with alisertib in A375 melanoma xenograft model (B-Raf mutant).
- Figure 4 is a graph that shows the mean tumor volume over time for Compound A at 50 mg kg BIW, administered alone and in combination with alisertib in A375 melanoma xenograft model B-Raf mutant).
- the present disclosure provides new combination therapies for the treatment of cancers.
- the present disclosure provides a method of treating a subject suffering from cancer, comprising administering to the subject: (i) a first composition comprising, as an active agent, a Raf inhibitor or a pharmaceutically acceptable salt thereof; and (ii) a second composition comprising, as an active agent, an Aurora kinase inhibitor or a pharmaceutically acceptable salt thereof; the amount of said active agents being such that the combination thereof is therapeutically effective in the treatment of cancer.
- Raf kinase refers to any one of a family of serme/threonine-protein kinases. The family consists of three isoform members (B-Raf, C-Raf (Raf-1), and A-Raf). Raf protein kinases are involved in the MAPK signaling pathway consisting of a kinase cascade that relays extracellular signals to the nucleus to regulate gene expression and key cellular functions. Unless otherwise indicated by context, the term “Raf kinase” is meant to refer to any Raf kinase protein from any species, including, without limitation. In one aspect, the Raf kinase is a human Raf kinase.
- Raf inhibitor or “inhibitor of Raf' is used to signify a compound which is capable of interacting with one or more isoform members (B-Raf, C-Raf (Raf-1) and/or A-Raf) of the
- Raf mutant forms include B-Raf V600E, B- Raf V600D, B-Raf V600K, B-Raf V600E + T5291 and/or B-Raf V600E + G468A.
- the Raf kinase is inhibited by at least about 50%, at least about 75%, at least about 90%, at least about 95%, at least about 98%, or at least about 99%.
- the concentration of Raf kinase inhibitor required to reduce Raf kinase activity by 50% is less than about 1 ⁇ M, less than about 500 nM, less than about 100 nM, less than about 50 nM, less than about 25 nM, less than about 10 nM, less than about 5 nM, or less than about 1 nM.
- such inhibition is selective for one or more Raf isoforms, i.e., the Raf inhibitor is selective for B-Raf (wild type), mutant B-Raf, A-Raf, and C-Raf.
- the Raf inhibitor is selective for B-Raf (wild type), B-Raf V600E, A-Raf and C-Raf.
- the Raf inhibitor is selective for B-Raf (wild type), B-Raf V600E, A-Raf and C-Raf.
- the Raf inhibitor is selective for B-Raf (wild type), B-Raf V600D, A-Raf and C-Raf.
- the Raf inhibitor is selective for B-Raf and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf (wild type), B-Raf V600K, and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf (wild type), B-Raf V600E and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf (wild type), B-Raf V600D and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf (wild type), B-Raf V600K and C-Raf. In some embodiments, the Raf inhibitor is selective for mutant B-Raf.
- the Raf inhibitor is selective for mutant B- Raf V600E. In some embodiments, the Raf inhibitor is selective for mutant B-Raf V600D. In some embodiments, the Raf inhibitor is selective for mutant B-Raf V600K.
- pan-Raf inhibitor is a Raf inhibitor that inhibits more than the B-Raf isoform of Raf proteins.
- Aurora kinase refers to any one of a family of related serine/threonine kinases involved in mitotic progression.
- a variety of cellular proteins that play a role in cell division are substrates for phosphorylation by Aurora kinase enzymes, including, without limitation, histone H3, p 3, CENP-A, myosin II regulatory light chain, protein phosphatase- 1, TPX-2, INCENP, survivin, topoisomerase ⁇ alpha, vimentin, MBD-3, MgcRacGAP, desmin, Ajuba, XIEg5 (in Xenopus), NdclOp (in budding yeast), and D-TACC (in Drosophila).
- Aurora kinase enzymes also are themselves substrates for autophosphorylation, e.g., at Thr288.
- the term "Aurora kinase” is meant to refer to any Aurora kinase protein from any species, including, without limitation, Aurora A, Aurora B, and Aurora C.
- the Aurora kinase is Aurora A or B.
- the Aurora kinase is a human Aurora kinase.
- Aurora kinase inhibitor or “inhibitor of Aurora kinase” is used to signify a compound which is capable of interacting with an Aurora kinase and inhibiting its enzymatic activity. Inhibiting Aurora kinase enzymatic activity means reducing the ability of an Aurora kinase to phosphorylate a substrate peptide or protein. In some embodiments, such reduction of Aurora kinase activity is at least about 50%, at least about 75%, at least about 90%, at least about 95%, or at least about 99%. In some embodiments, the concentration of Aurora kinase inhibitor required to reduce an Aurora kinase enzymatic activity is less than about 1 ⁇ , less than about 500 nM, less than about 100 nM, or less than about 50 nM.
- such inhibition is selective, i.e., the Aurora kinase inhibitor reduces the ability of an Aurora kinase to phosphorylate a substrate peptide or protein at a concentration that is lower than the concentration of the inhibitor that is required to produce another, unrelated biological effect, e.g., reduction of the enzymatic activity of a different kinase.
- the Aurora kinase inhibitor also reduces the enzymatic activity of another kinase.
- the Aurora kinase inhibitor reduces the enzymatic activity of another kinase that is implicated in cancer.
- treatment is meant to include the full spectrum of intervention for the cancer from which the subject is suffering, such as administration of the combination to alleviate, slow, stop, or reverse one or more symptoms of the cancer and to delay the progression of the cancer even if the cancer is not actually eliminated.
- Treatment can include, for example, a decrease in the severity of a symptom, the number of symptoms, or frequency of relapse, e.g., the inhibition of tumor growth, the arrest of tumor growth, or the regression of already existing tumors.
- the term "therapeutically effective amount” as used herein to refer to combination therapy means the amount of the combination of agents taken together so that the combined effect elicits the desired biological or medicinal response, i.e., either destroys the target cancer cells or slows or arrests the progression of the cancer in a subject.
- the "therapeutically effective amount” as used herein to refer to combination therapy would be the amount of the Raf inhibitor and the amount of the Aurora kinase inhibitor that when administered together, either sequentially or simultaneously, on the same or different days during a treatment cycle, has a combined effect that is beneficial.
- the combined effect is additive.
- the combined effect is synergistic.
- the amount of the Raf inhibitor and/or the amount of the Aurora kinase inhibitor individually may or may not be therapeutically effective.
- Cytotoxic effect in reference to the effect of an agent on a cell, means killing of the cell.
- Cytostatic effect means an inhibition of cell proliferation.
- a “cytotoxic agent” means an agent that has a cytotoxic or cytostatic effect on a cell, thereby depleting or inhibiting the growth of, respectively, cells within a cell population.
- subject means a mammal, and “mammal” includes, but is not limited to a human.
- the subject has been treated with an agent, e.g., a Raf inhibitor or an Aurora kinase inhibitor, prior to initiation of treatment according to the method of the disclosure.
- the subject is a at risk of developing or experiencing a recurrence of a cancer.
- structures depicted herein are meant to include compounds which differ only in the presence of one or more isotopically enriched atoms.
- compounds having the present structure except for the replacement of a hydrogen atom by a deuterium or tritium, or the replacement of a carbon atom by a 13C- or 14C-enriched carbon are within the scope of the disclosure.
- the Raf inhibitor inhibits B-Raf, mutant B-Raf, A-Raf, and C- Raf. In some embodiments, the Raf inhibitor is selective for B-Raf, B-Raf V600E, A-Raf and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf, B-Raf V600E, A-Raf and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf, B-Raf V600D, A-Raf and C-Raf.
- the Raf inhibitor is selective for B-Raf, B-Raf V600K, and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf, B-Raf V600E and C-Raf. hi some embodiments, the Raf inhibitor is selective for B-Raf, B-Raf V600D and C-Raf. In some embodiments, the Raf inhibitor is selective for B-Raf, B-Raf V600K and C-Raf. In some embodiments, the Raf inhibitor is selective for mutant B-Raf. In some embodiments, the Raf inhibitor is selective for mutant B-Raf V600E. In some embodiments, the Raf inhibitor is selective for mutant B-Raf V600D. In some embodiments, the Raf inhibitor is selective for mutant B-Raf V600K
- Raf inhibitors include the compounds described herein, as well as compounds disclosed in, for example, WO 2006/065703, WO 2010/064722, WO 2011/117381, WO 2011/090738, WO 2011/161216, WO 2011/097526, WO 2011/025927, WO 2011/023773, WO 2011/147764, WO 2011/079133, and WO 2011/063159.
- Raf inhibitors include vemurafinib, dabrafenib, and encoratinib. Also suitable for use in the methods of the disclosure are solvated and hydrated forms of any of these compounds.
- Raf inhibitors can be prepared in a number of ways well known to one skilled in the art of organic synthesis, including, but not limited to, the methods of synthesis described in detail in the above references.
- the Raf inhibitor is a small molecular weight compound.
- the Raf inhibitor is a pan-Raf inhibitor.
- pan-Raf inhibitors include
- Raf inhibitors can be assayed in vitro or in vivo for their ability to bind to and/or inhibit Raf kinases.
- In vitro assays include biochemical FRET assays to measure the phophorvlation of MEK by Raf kinases as a method for quantifying the ability of compounds to inhibit the enzymatic activity of Raf kinases.
- the compounds also can be assayed for their ability to affect cellular or physiological functions mediated by Raf kinase activity. For example in vitro assays quantitate the amount of phosphor-ERK in cancer cells. Assays for each of these activities are known in the art.
- the Raf inhibitor is (R)-2-(l-(6-amino-5-chloropyrimidine-4- carboxamide)ethyl)-N-(5-chloro-4-(trifluoromethyl)pyridin-2-yl)thiazole-5-carboxamide (Compound A) or a pharmaceutically acceptable salt thereof:
- Aurora kinase inhibitors include the compounds described herein, as well as compounds disclosed in, for example, WO 05/111039, US 2005/0256102, US
- Aurora kinase inhibitors can be prepared in a number of ways well known to one skilled in the art of organic synthesis, including, but not limited to, the methods of synthesis described in detail in the above
- the selective Aurora A kinase inhibitor is a small molecular weight compound.
- selective inhibitors of Aurora A kinase include the compounds described herein, as well as compounds disclosed in, for example, US 2008/0045501, US 7,572,784, WO 05/111039, WO 08/021038, US 7,718,648, WO 08/063525, US 2008/0167292, US 8,026,246, WO 10/134965, US 2010/0 10651, WO 11/014248, US 2011/0039826, and US 2011/0245234, each of which is hereby incorporated by reference in its entirety, sodium 4- ⁇ [9-chloro-7-(2-fluoro-6-methoxyphenyl)-5H- pyrimidoCS ⁇ -dlPlbenzazepin ⁇ -yljaminol ⁇ -methoxybenzoate, W-2449 (Kyowa), ENMD-2076 (EntreMed), and MK-5108 (Vertex/
- Aurora A kinase inhibitors can be assayed in vitro or in vivo for their ability to selectively bind to and or inhibit an Aurora A kinase.
- In vitro assays include assays to determine selective inhibition of the ability of an Aurora A kinase to phosphorylate a substrate protein or peptide. Alternate in vitro assays quantitate the ability of the compound to selectively bind to an Aurora A kinase. Selective inhibitor binding may be measured by radiolabelling the inhibitor prior to binding, isolating the inhibitor/ Aurora A kinase complex and determining the amount of radiolabel bound.
- selective inhibitor binding may be determined by running a competition experiment in which new inhibitors are incubated with Aurora A kinase bound to a known radioligand.
- the compounds also can be assayed for their ability to affect cellular or physiological functions mediated by Aurora A kinase activity.
- inhibitors can also be assayed in vitro and in vivo for their ability to selectively bind to and/or inhibit an Aurora B kinase, using assays analogous to those described above for Aurora A kinase.
- Inhibitors can be assayed in vitro and in vivo for their ability to inhibit Aurora A kinase in the absence of Aurora B kinase inhibition, by immunofluorescent detection of pHisH3. (Proc. Natl. Acad. Sci. (2007) 104, 4106). Assays for each of these activities are known in the art.
- the Aurora A kinase inhibitor is 4- ⁇ [9-chloro-7-(2-fluoro-6- methoxyphenyl)-5H-pyrimido [5 ,4-d] [2]benzazepin-2-y 1] amino ⁇ -2-methoxybenzoic acid ((alisertib (MLN8237)) of formula (I), or a pharmaceutically acceptable salt thereof:
- a pharmaceutically acceptable salt of formula (I) is sodium 4- ⁇ [9-chloro- 7-(2-fluoro-6-methoxyphenyl)-5H-pyrimido[5,4-d] [2]benzazepin-2-yI]amino ⁇ -2-methoxybenzoate of formula (II), or a crystalline form thereof:
- the compound of formula ( ⁇ ) is sodium 4- ⁇ [9-chloro-7-(2-fluoro-6- methoxyphenyl)-5H-pyrimido[5,4-d][2]benzazepin-2-yl]amino ⁇ -2-methoxybenzoate. In some embodiments, the compound of formula ( ⁇ ) is sodium 4- ⁇ [9-chloro-7-(2-fluoro-6-methoxyphenyl)-5H- pyrimido[5,4-d][2]benzazepin-2-yl]amino ⁇ -2-methoxybenzoate monohydrate.
- the compound of formula ( ⁇ ) is sodium 4- ⁇ [9-chloro-7-(2-fluoro-6-methoxyphenyl)-5H-pyrimido[5,4- d][2]benzazepin-2-yl]amino ⁇ -2-methoxybenzoate polymorph Form 2, as described in US2008/0167292, US 8,026,246, and US 2011/0245234, each of which is hereby incorporated by reference in their entirety.
- the growth of cells contacted with a Raf inhibitor and an Aurora kinase inhibitor is retarded by at least about 50% as compared to growth of non-contacted cells.
- cell proliferation of contacted cells is inhibited by at least about 75%, at least about 90%, or at least about 95% as compared to non-contacted cells.
- the phrase "inhibiting cell proliferation" includes a reduction in the number of contacted cells, as compare to non-contacted cells.
- a Raf inhibitor and an inhibitor of Aurora kinase that inhibits cell proliferation in a contacted cell may induce the contacted cell to undergo growth retardation, to undergo growth arrest, to undergo programmed cell death (i.e., apoptosis), or to undergo necrotic cell death.
- the disclosure provides a pharmaceutical composition comprising i) a Raf inhibitor and ii) an Aurora kinase inhibitor.
- the present disclosure provides new combination therapies for the treatment of cancers.
- the present disclosure provides a method of treating a subject suffering from cancer, comprising administering to the subject: (i) a first composition comprising, as an active agent, a Raf inhibitor or a pharmaceutically acceptable salt there; and (ii) a second composition comprising, as an active agent, an Aurora kinase inhibitor or a pharmaceutically acceptable salt thereof; the amount of said active agents being such that the combination thereof is therapeutically effective in the treatment of cancer.
- the cancer is a solid tumor cancer.
- the cancer is a hematological malignancy.
- the cancer is relapsed.
- relapsed cancer is cancer which has returned after a period of time in which no cancer could be detected.
- the cancer is refractory. In one aspect, refractory cancer does not respond to cancer treatment; it is also known as resistant cancer. In some embodiments, the tumor is unresectable. In one aspect, an unresectable tumor is unable to be removed by surgery. In some embodiments, the cancer has not been previously treated. In some embodiments, the cancer is locally advanced. In one aspect, “locally advanced” refers to cancer that is somewhat extensive but still confined to one area. In some instances, "locally advanced” can refer to a small tumor that hasn't spread but has invaded nearby organs or tissues that make it difficult to remove with surgery alone. In some embodiments, the cancer is metastatic. Li one aspect, metastatic cancer is a cancer that has spread from the part of the body where it started (the primary site) to other parts of the body.
- the cancer is BRAF mutation-positive cancer.
- BRAF or "B-Raf ' refers to B-Raf proto-oncogene, serine/threonine kinase, the gene associated with the mRNA sequence assigned as GenBank Accession No. NM 004333, SEQ ID NO: 1 (open reading frame is SEQ ID NO:2, nucleotides 62 to 2362 of SEQ ID NO: 1), encoding GenPept Accession No. NP 004324, SEQ ID NO: 3).
- Other names for B-Raf include raffil andNoonan Syndrome 7 (NS7).
- B-Raf functions as a serine/threonine kinase, has a role in regulating the MAP kinase/ERKs signaling pathway and can be found on chromosome 7q.
- the cancer is B-Raf mutation-positive cancer.
- the B-Raf mutation includes but is not limited to a V600E, V600D or V600K mutation. In some
- the B-Raf mutation is V600E. In some embodiments, the B-Raf mutation is V600D. In some embodiments, the B-Raf mutation is V600K. In some embodiments, the B-Raf mutation is V600E + T529L In some embodiments, the B-Raf mutation is V600E + G468A.
- V600E mutation means substitution of glutamic acid for valine at the amino acid position of 600.
- T529I is a threonine to isoleucine B-Raf gatekeeper mutation and G468A is a B-Raf secondary mutation at G1403C in exon 11.
- “V600K mutation” means substitution of lysine for valine at the amino acid position of 600.
- V600D mutation means substitution of aspartic acid for valine at the amino acid position of 600.
- the V600K mutation results in an amino acid substitution at position 600 in B-Raf, from a valine (V) to a lysine (K)
- the V600K mutation results in an amino acid substitution at position 600 in B-Raf, from a valine (V) to a lysine (K)).
- the cancer is NRAS mutation-positive cancer.
- NRAS neuroblastoma RAS viral (v-ras) oncogene homolog
- Other names for N-Ras include Autoimmune Lymphoproliferative
- N-Ras functions as an oncogene with GTPase activity and can be found on chromosome lp. N-Ras interacts with the cell membrane and various effector proteinSj such as Raf and RhoA, which carry out its signaling function through the cytoskeleton and effects on cell adhesion (Fotiadou et al. (2007) Mol. Cel. Biol. 27:6742-6755).
- the cancer is NRAS mutation-positive cancer.
- the NRAS mutation is Q61R mutation.
- the present disclosure provides a method of treating a subject suffering from cancer.
- the cancer is selected from skin cancer, ocular cancer, gastrointestinal cancer, thyroid cancer, breast cancer, ovarian cancer, central nervous system cancer, laryngeal cancer, cervical cancer, lymphatic system cancer, genitourinary tract cancer, bone cancer, biliary tract cancer, endometrial cancer, liver cancer, lung cancer, prostate cancer and colon cancer.
- the cancer is not non- small cell lung cancer (NSCLC).
- the cancer is selected from skin cancer, ocular cancer, gastrointestinal cancer, thyroid cancer, breast cancer, ovarian cancer, brain cancer, laryngeal cancer, cervical cancer, lymphatic system cancer, genitourinary tract cancer, bone cancer, biliary tract cancer, endometrial cancer, liver cancer, lung cancer, prostate cancer and colon cancer.
- the cancer is a hematological malignancy.
- the hematological malignancy is selected from acute myelogenous leukemia (AML), chronic myelogenous leukemia (CML), chronic lymphoblastic leukemia (CLL), and myelodysplastic syndrome.
- the cancer is selected from thyroid cancer, ovarian cancer, melanoma, acute myelogenous leukemia (AML), and colon cancer. In some embodiments, the cancer is melanoma or colon cancer.
- the cancer is skin cancer.
- the skin cancer is melanoma.
- the melanoma is B-Raf -mutated melanoma.
- the melanoma is NRAS-mutated melanoma.
- the cancer is gastrointestinal cancer.
- gastrointestinal cancer includes cancer of the esophagus, stomach (also known as gastric cancer), biliary system, pancreas, small intestine, large intestine, rectum and anus).
- the gastrointestinal cancer is adenocarcinoma of the esophagus, adenocarcinoma of the gastroesophageal junction or adenocarcinoma of the stomach.
- the gastrointestinal cancer is stomach cancer.
- the cancer is colon cancer. Colon cancer is also known as colorectal (CRC), bowel, or rectum cancer.
- the cancer is a central nervous system cancer.
- the central nervous system cancer is brain cancer.
- thyroid cancer is thyroid carcinoma.
- genitourinary tract cancer is bladder cancer.
- the Raf inhibitor and Aurora kinase inhibitor are administered in such a way that they provide a synergistic effect in the treatment of a cancer. Administration can be by any suitable means provided that the administration provides the desired therapeutic effect, i.e., synergism.
- the Raf inhibitor and Aurora kinase inhibitor are administered during the same cycle of therapy, e.g., during one cycle of therapy, e.g., a three or four week time period, both the Raf kinse inhibitor and Aurora kinase inhibitor are administered to the subject.
- the Raf inhibitor and Aurora kinase inhibitor are cyclically administered to a subject.
- Cycling therapy involves the administration of a first agent (e.g., a first prophylactic or therapeutic agent) for a period of time, followed by the administration of a second agent and/or third agent (e.g., a second and/or third prophylactic or therapeutic agent) for a period of time and repeating this sequential administration. Cycling therapy can reduce the development of resistance to one or more of the therapies, avoid or reduce the side effects of one of the therapies, and/or improve the efficacy of the treatment.
- a first agent e.g., a first prophylactic or therapeutic agent
- second agent and/or third agent e.g., a second and/or third prophylactic or therapeutic agent
- the treatment period during which an agent is administered is then followed by a non-treatment period of particular time duration, during which the therapeutic agents are not administered to the subject.
- This non-treatment period can then be followed by a series of subsequent treatment and non-treatment periods of the same or different frequencies for the same or different lengths of time
- the treatment and non-treatment periods are alternated. It will be understood that the period of treatment in cycling therapy may continue until the subject has achieved a complete response or a partial response, at which point the treatment may be stopped. Alternatively, the period of treatment in'cycling therapy may continue until the subject has achieved a complete response or a partial response, at which point the period of treatment may continue for a particular number of cycles.
- the length of the period of treatment may be a particular number of cycles, regardless of subject response. In some other embodiments, the length of the period of treatment may continue until the subject relapses.
- the amounts or suitable dosages of the Raf inhibitor depends upon a number of factors, including the nature of the severity of the condition to be treated, the particular inhibitor, the route of administration and the age, weight, general health, and response of the individual subject . In some embodiments, the suitable dose level is one that achieves inhibition of B-Raf, C-Raf, A-Raf and/or B-RafV600E.
- the suitable dose level is one that achieves inhibition of B-Raf, C-Raf, and/or B-Raf V600E. In some embodiments, the suitable dose level is one that achieves a therapeutic response as measured by tumor regression, or other standard measures of disease progression, progression free survival or overall survival. In some embodiments, the suitable dose level is one that achieves this therapeutic response and also minimizes any side effects associated with the administration of the therapeutic agent.
- Suitable daily dosages of inhibitors of Raf kinase can generally range, in single or divided or multiple doses, from about 10% to about 100% of the maximum tolerated dose as a single agent. In some embodiments, the suitable dosages are from about 15% to about 100% of the maximum tolerated dose as a single agent. In some some embodiments, the suitable dosages are from about 25% to about 90% of the maximum tolerated dose as a single agent. In some other embodiments, the suitable dosages are from about 30% to about 80% of the maximum tolerated dose as a single agent. In some other embodiments, the suitable dosages are from about 40% to about 75% of the maximum tolerated dose as a single agent.
- the suitable dosages are from about 45% to about 60% of the maximum tolerated dose as a single agent. In some embodiments, suitable dosages are about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95%, about 100%, about 105%, or about 110% of the maximum tolerated dose as a single agent.
- a suitable dosage of a Raf inhibitor may be taken at any time of the day or night. In some embodiments, a suitable dosage of a selective inhibitor of Raf inhibitor is taken in the morning. In some other embodiments, a suitable dosage of a Raf inhibitor is taken in the evening. In some other embodiments, a suitable dosage of a Raf inhibitor is taken both in the morning and the evening. It will be understood that a suitable dosage of a Raf inhibitor may be taken with or without food. In some embodiments a suitable dosage of a Raf inhibitor is taken with a meal. In some embodiments a suitable dosage of a Raf inhibitor is taken while fasting.
- the present disclosure provides a method of treating a subject suffering from cancer, comprising administering to the subject: (i) a first composition comprising, as an active agent, Compound A or a pharmaceutically acceptable salt thereof; and (ii) a second composition comprising, as an active agent, alisertib or a pharmaceutically acceptable salt thereof; the amount of said active agents being such that the combination thereof is therapeutically effective in the treatment of cancer.
- Compound A is administered once weekly (QW) with a rest period of 6 days between each
- Suitable weekly dosages of a Raf inhibitor e.g., Compound A can generally range, in single or divided or multiple doses, from up to about 1500 mg once weekly (QW).
- QW means dosing with a rest period of 6 days between each administration.
- Compound A is administered as a single dose.
- Compound A is administered as a divided dose.
- Compound A is administered as a divided dose on the same day.
- Compound A is administered in multiple doses.
- suitable weekly dosages of Compound A can generally range, in single or divided or multiple doses from about 200 mg to about 1000 mg per dose once a week.
- a suitable weekly dosage of Compound A is up to 600 mg per dose.
- Other suitable weekly dosages of Compound A can generally range, in single or divided or multiple doses, from about 400 mg to about 1000 mg.
- the suitable weekly dosage is from about 400 mg to about 900 mg per dose once a week.
- the suitable weekly dosage is from about 500 mg to about 900 mg per dose once a week, hi some other embodiments, the suitable weekly dosage is from about 400 mg to about 600 mg per dose once a week.
- the suitable weekly dosage is from about 200 mg to about 500 mg per dose once a week.
- the suitable weekly dosage is from about 200 mg to about 300 mg per dose once a week. In some embodiments, suitable weekly dosages are about 200 mg, 300 mg, about 400 mg, about 500 mg, about 600 mg, about 700 mg, about 800 rag, or about 900 mg per dose once a week.
- Compound A is administered from up to about 200 mg per dose. Suitable weekly dosages of a Raf inhibitor e.g., Compound A can generally range, in single or divided or multiple doses, from up to about 200 mg per dose. In some embodiments, Compound A is administered as a single dose. In some embodiments, Compound A is administered as a divided dose. In some
- Compound A is administered in multiple doses.
- Other suitable dosages of Compound A can generally range, in single or divided or multiple doses, from about 50 mg to about 200 mg per dose.
- Other suitable dosages of Compound A can generally range, in single or divided or multiple doses, from about 75 mg to about 200 mg per dose.
- the suitable dosages are from about 100 mg to about 200 mg per dose. In some other embodiments, the suitable dosages are from about 150 mg to about 200 mg twice daily.
- suitable dosages are about 20 mg, about 25 mg, about 30 mg, about 35 mg, about 40 mg, about 45 mg, about 50 mg, about 55 mg, about 60 mg, about 65 mg, about 70 mg, about 75 mg, about 80 mg, about 85 mg, about 90 mg, about 95 mg, about 100 mg, about 105 mg, about 110 mg, about 115 mg, about 120 mg, about 125 mg, about 130 mg, about 135 mg, about 140 mg, about 145 mg, about 150 mg, about 155 mg, about 160 mg, about 165 mg, about 170 mg, about 175 mg, about 180 mg, about 185 mg, about 190 mg, about 1 5 mg, or about 200 mg per dose.
- the suitable dosage of Compound A is from about 100 mg to about 200 mg per dose.
- the dosage of the af inhibitor administered to a subject will also depend on frequency of administration, hi some embodiments, Compound A is administered once weekly (QW) with a rest period of 6 days between each administration. In some embodiments, Compound A is administered daily. In some embodiments, Compound A is administered every other day. In some embodiments, Compound A is administered on a 28-day cycle in which Compound A is administered on days 1, 3, 5, 8, 10, 12, 15, 17, 19, 22, 24, and 26 of a 28-day cycle.
- the amounts or suitable dosages of the selective inhibitor of Aurora A kinase depends upon a number of factors, including the nature of the severity of the condition to be treated, the particular inhibitor, the route of administration and the age, weight, general health, and response of the individual subject.
- the suitable dose level is one that achieves an effective exposure as measured by increased skin mitotic index, or decreased chromosome alignment and spindle bipolarity in tumor mitotic cells, or other standard measures of effective exposure in cancer patients.
- the suitable dose level is one that achieves a therapeutic response as measured by tumor regression, or other standard measures of disease progression, progression free survival or overall survival.
- the suitable dose level is one that achieves this therapeutic response and also minimizes any side effects associated with the administration of the therapeutic agent.
- Suitable daily dosages of selective inhibitors of Aurora A kinase can generally range, in single or divided or multiple doses, from about 10% to about 100% of the maximum tolerated dose as a single agent. In some embodiments, the suitable dosages are from about 15% to about 100% of the maximum tolerated dose as a single agent. In some some embodiments, the suitable dosages are from about 25% to about 90% of the maximum tolerated dose as a single agent. In some other embodiments, the suitable dosages are from about 30% to about 80% of the maximum tolerated dose as a single agent. In some other embodiments, the suitable dosages are from about 40% to about 75% of the maximum tolerated dose as a single agent.
- the suitable dosages are from about 45% to about 60% of the maximum tolerated dose as a single agent. In some embodiments, suitable dosages are about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95%, about 100%, about 105%, or about 110% of the maximum tolerated dose as a single agent. [0075] It will be understood that a suitable dosage of a selective inhibitor of Aurora A kinase may be taken at any time of the day or night. In some embodiments, a suitable dosage of a selective inhibitor of Aurora A kinase is taken in the morning.
- a suitable dosage of a selective inhibitor of Aurora A kinase is taken in the evening. In some other embodiments, a suitable dosage of a selective inhibitor of Aurora A kinase is taken both in the morning and the evening. It will be understood that a suitable dosage of a selective inhibitor of Aurora A kinase may be taken with or without food. In some embodiments a suitable dosage of a selective inhibitor of Aurora A kinase is taken with a meal. In some embodiments a suitable dosage of a selective inhibitor of Aurora A kinase is taken while fasting.
- Suitable daily dosages of alisertib can generally range, in single or divided or multiple doses, from about 20 mg to about 120 mg per day. Other suitable daily dosages of alisertib can generally range, in single or divided or multiple doses, from about 30 mg to about 90 mg per day. Other suitable daily dosages of alisertib can generally range, in single or divided or multiple doses, from about 40 mg to about 80 mg per day. In some embodiments, the suitable dosages are from about 10 mg to about 50 mg per dose given twice daily. In some embodiments, the suitable dosages are from about 30 mg to about 50 mg per dose given twice daily. In some other embodiments, the suitable dosages are from about 40 mg to about 50 mg per dose given twice daily.
- the suitable dosages are from about 30 mg to about 40 mg per dose given twice daily. In some other embodiments, the suitable dosages are from about 25 mg to about 40 mg per dose given twice daily. In some embodiments, suitable dosages are about 20 mg, about 25 mg, about 30 mg, about 35 mg, about 40 mg, about 45 mg, about 50 mg, about 55 mg, about 60 mg, about 65 mg, about 70 mg, about 75 mg, about 80 mg, about 85 mg, about 90 mg, about 95 mg, about 100 mg, about 105 mg, about 110 mg, about 115 mg, or about 120 mg per day.
- suitable dosages are about 10 mg, about 15 mg, about 20 mg, about 25 mg, about 30 mg, about 35 mg, about 40 mg, about 45 mg, about 50 mg, about 55 mg, or about 60 mg per dose given twice daily.
- the suitable dosage of alisertib is about 40 mg per dose given twice daily.
- the suitable dosage of alisertib is about 30 mg per dose given twice daily.
- the suitable dosage of alisertib is about 35 mg per dose given twice daily.
- the suitable dosage of alisertib is about 50 mg per dose given twice daily.
- a first treatment period in which a first amount of the selective inhibitor of Aurora A kinase is administered can be followed by another treatment period in which a same or different amount of the same or a different selective inhibitor of Aurora A kinase is administered.
- the second treatment period can be followed by other treatment periods.
- one or more additional therapeutic agents can be administered to the subject.
- the Aurora kinase inhibitor is administered 3 days on and 4 days off for 3 weeks of a 4 week cycle (e.g., 28-days).
- the Aurora kinase inhibitor is administered on a 28-day cycle in which the Aurora A kinase inhibitor is administered on days 1, 2, 3, 8,
- alisertib is administered twice-daily on a 28-day cycle in which the Aurora A kinase inhibitor is administered on days 1, 2, 3, 8, 9, 10, 15, 16, and 17 of a 28-day cycle.
- alisertib is administered twice-daily on a 28-day cycle in which the Aurora A kinase inhibitor is administered on days 1, 2, 3, 8, 9,
- Administration of the Raf inhibitor and the Aurora a kinase inhibitor can be on the same or different days provided that administration provides the desired thereapeutic effect. In some embodiments of the present disclosure, administration of the Raf inhibitor and the Aurora A kinase inhibitor will be on the same days. In some embodiments of the present disclosure, administration of the Raf inhibitor and the Aurora A kinase inhibitor will be on the same and/or different days, e.g, Compound A is administered on days 1, 3, 5, 8, 10, 12, 15, 17, 19, 22, 24, and 26 of a 28-day cycle and alisertib is administered on days 1, 2, 3, 8, 9, 10, 15, 16, and 17 of a 28-day cycle. Alternative treatment cycles are encompassed by the present disclosure as long as they produce the desired result.
- the Aurora A kinase inhibitor may be administered with the Raf inhibitor in a single dosage form or as a separate dosage form. When administered as a separate dosage form, the Raf inhibitor may be administered prior to, at the same time as, or following administration of the Aurora A kinase inhibitor of the disclosure.
- administration of a beneficial amount of the therapeutic agents encompasses administering Compound A on days 1, 3, 5, 8, 10, 12, 15, 17, 19, 22, 24, and 26 during the treatment cycle of 28-days in an amount of from about 100 mg to about 200 mg per dose (measured amount of Compound A) in combination with administering alisertib or a pharmaceutically acceptable salt thereof on days 1, 2, 3, 8, 9, 10, 15, 16, and 17 during the treatment cycle of 28 days in amount of from about 30 to about 50 mg per dose given twice daily (measured as the amount of alisertib).
- a beneficial amount of the therapeutic agents is a synergistic amount.
- a beneficial amount of the therapeutic agents is an additive amount.
- the method to treat a subject suffering from cancer comprises administering to said subject a therapeutically effective amount of a combination of an amount of Compound A and an amount of alisertib or a pharmaceutically acceptable salt thereof.
- cancer subjects include but are not limited to melonma subjects with a B-Raf mutation, melanoma subjects who failed vemurafenib or other B-Raf inhibitors, melanoma patients with N-Ras mutation B-Raf wild type, colorectal cancer subjects with B-Raf V600E mutation B-Raf wild type, ovarian cancer subjects with B- Raf V600E mutation B-Raf wild type, lung cancer subjects with B-Raf V600E mutation B-Raf wild type, AML subjects with N-Ras mutation B-Raf wild type, liver cancer subjects with N-Ras mutation B-Raf wild type, thyroid cancer subjects with B-Raf V600E or N-Ras mutation B
- the disclosure provides a method for extending duration of response to treatment in subject suffering from cancer comprising administering to the subject: (i) a first composition comprising, as an active agent, a Raf inhibitor or a pharmaceutically acceptable salt thereof; and (ii) a second composition comprising, as an active agent, an Aurora kinase inhibitor or a pharmaceutically acceptable salt thereof; the amount of said active agents being such that the combination thereof is effective for extending the duration of response.
- the Raf inhibitor can be administered by any method known to one skilled in the art.
- the Raf inhibitor can be administered in the form of a first composition, in some embodiments as a pharmaceutical composition of a Raf inhibitor and a pharmaceutically acceptable carrier, such as those described herein.
- the first composition is a solid dispersion extrudate as described in U.S. provisional application 61/970,595, filed March 26, 2014 and WO 2015/148828.
- the first composition is a solid dispersion extrudate comprising a vinylpyrrolidinone- vinyl acetate copolymer and one or more pharmaceutical acceptable excipients.
- the copolymer is copovidone e.g, ollidon® VA64.
- the first composition is amorphous.
- the selective inhibitor of Aurora A kinase can be administered by any method known to one skilled in the art.
- the selective inhibitor of Aurora A kinase can be administered in the form of a second composition, in some embodiments a pharmaceutical composition of the selective inhibitor of Aurora A kinase and a pharmaceutically acceptable carrier, such as those described herein.
- the pharmaceutical composition is suitable for oral administration.
- the pharmaceutical composition is a tablet for oral administration, such as an enteric coated tablet. Such tablets are described in US 2010/0310651, which is hereby incorporated by reference in its entirety.
- the pharmaceutical composition is a liquid dosage form for oral administration. Such liquid dosage forms are described in US 2011/0039826, hereby incorporated by reference.
- these compositions optionally further comprise one or more additional therapeutic agents.
- the salt preferably is derived from an inorganic or organic acid or base.
- suitable salts see, e.g., Berge et al, J. Pharm. Sci. 66:1-19 (1977) and Remington: The Science and Practice of Pharmacy, 20th Ed., ed. A. Gennaro, Lippincott Williams & Wilkins, 2000.
- Nonlimiting examples of suitable acid addition salts include the following: acetate, adipate, alginate, aspartate, benzoate, benzene sulfonate, bisulfate, butyrate, citrate, camphorate, camphor sulfonate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fumarate,
- lucoheptanoate glycerophosphate, hemisulfate, heptanoate, hexanoate, hydrochloride, hydrobromide, hydroiodide, 2-hydroxyethanesulfonate, lactate, maleate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, oxalate, pamoate, pectinate, persulfate, 3-phenyl-propionate, picrate, pivalate, propionate, succinate, tartrate, thiocyanate, tosylate and undecanoate.
- Suitable base addition salts include, without limitation, ammonium salts, alkali metal salts, such as sodium and potassium salts, alkaline earth metal salts, such as calcium and magnesium salts, salts with organic bases, such as dicyclohexylamine, N-methyl-D-glucamine, t-butylamine, ethylene diamine, ethanolamine, and choline, and salts with amino acids such as arginine, lysine, and so forth.
- alkali metal salts such as sodium and potassium salts
- alkaline earth metal salts such as calcium and magnesium salts
- salts with organic bases such as dicyclohexylamine, N-methyl-D-glucamine, t-butylamine, ethylene diamine, ethanolamine, and choline
- amino acids such as arginine, lysine, and so forth.
- basic nitrogen-containing groups may be quaternized with such agents as lower alkyl halides, such as methyl, ethyl, propyl, and butyl chlorides, bromides and iodides; dialkyl sulfates, such as dimethyl, diethyl, dibutyl and diamyl sulfates, long chain halides such as decyl, lauryl, myristyl and stearyl chlorides, bromides and iodides, ara!kyl halides, such as benzyl and phenethyl bromides and others. Water or oil-soluble or dispersible products are thereby obtained.
- lower alkyl halides such as methyl, ethyl, propyl, and butyl chlorides, bromides and iodides
- dialkyl sulfates such as dimethyl, diethyl, dibutyl and diamyl sulfates
- long chain halides such as
- the term "pharmaceutically acceptable carrier” is used herein to refer to a material that is compatible with a recipient subject.
- the subject is a mammal.
- the subject is a human.
- the material is suitable for delivering an active agent to the target site without terminating the activity of the agent.
- the toxicity or adverse effects, if any, associated with the carrier preferably are commensurate with a reasonable risk benefit ratio for the intended use of the active agent.
- carrier includes any and all solvents, diluents, and other liquid vehicles, dispersion or suspension aids, surface active agents, isotonic agents, thickening or emulsifying agents, preservatives, solid binders, lubricants and the like, as suited to the particular dosage form desired.
- Remington The Science and Practice of Pharmacy, 20th Ed., ed. A. Gennaro, Lippincott Williams & Wilkins, 2000 discloses various carriers used in formulating pharmaceutically acceptable compositions and known techniques for the preparation thereof.
- materials which can serve as pharmaceutically acceptable carriers include, but are not limited to, ion exchangers, alumina, aluminum stearate, lecithin, serum proteins, such as human serum albumin, buffer substances such as disodium hydrogen phosphate, potassium hydrogen phosphate, sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, magnesium hydroxide and aluminum hydroxide, glycine, sorbic acid, or potassium sorbate, partial glyceride mixtures of saturated vegetable fatty acids, water, pyrogen-free water, salts or electrolytes such as protamine sulfate, disodium hydrogen phosphate, potassium hydrogen phosphate, sodium chloride, and zinc salts, colloidal silica, magnesium trisilicate, polyvinyl pyrrolidone, polyacrylates, waxes, polyethylene-polyoxypropylene-block polymers, wool fat, sugars such as lactose, glucose, sucrose, starches such as corn starch and potato starch, cellulose and
- compositions of the disclosure can be manufactured by methods well known in the art such as conventional granulating, mixing, dissolving, encapsulating, lyophilizing, or emulsifying processes, among others.
- Compositions may be produced in various forms, including granules, precipitates, or particulates, powders, including freeze dried, rotary dried or spray dried powders, amorphous powders, tablets, capsules, syrup, suppositories, injections, emulsions, elixirs, suspensions or solutions.
- Formulations may optionally contain solvents, diluents, and other liquid vehicles, dispersion or suspension aids, surface active agents, pH modifiers, isotonic agents, thickening or emulsifying agents, stabilizers and preservatives, solid binders, lubricants and the like, as suited to the particular dosage form desired.
- compositions of this disclosure are formulated for pharmaceutical administration to a mammal.
- for pharmaceutical administration to a human being Such pharmaceutical compositions of the present disclosure may be administered orally, parenterally, by inhalation spray, topically, rectally, nasally, buccally, vaginally or via an implanted reservoir.
- parenteral as used herein includes subcutaneous, intravenous, intramuscular, intra-articular, intra- synovial, intrasternal, intrathecal, intrahepatic, intralesional and intracranial injection or infusion techniques.
- the compositions are administered orally, intravenously, or subcutaneously.
- the formulations of the disclosure may be designed to be short-acting, fast-releasing, or long-acting.
- compounds can be administered in a local rather than systemic means, such as administration (e.g., by injection) at a tumor site.
- Liquid dosage forms for oral administration include, but are not limited to, pharmaceutically acceptable emulsions, microemulsions, solutions, suspensions, syrups and elixirs.
- the liquid dosage forms may contain inert diluents commonly used in the art such as, for example, water or other solvents, solubilizing agents and emulsifiers such as ethyl alcohol, isopropyl alcohol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylene glycol, cyclodextrins, dimethylformamide, oils (in particular, cottonseed, groundnut, corn, germ, olive, castor, and sesame oils), glycerol, tetrahydrofurfuryl alcohol, polyethylene glycols and fatty acid esters of sorbitan, and mixtures thereof.
- inert diluents commonly used in the art such as,
- Injectable preparations for example, sterile injectable aqueous or oleaginous suspensions may be formulated according to the known art using suitable dispersing or wetting agents and suspending agents.
- the sterile injectable preparation may also be a sterile injectable solution, suspension or emulsion in a nontoxic parenterally acceptable diluent or solvent, for example, as a solution in 1,3-butanediol.
- acceptable vehicles and solvents that may be employed are water, Ringer's solution, U.S.P. and isotonic sodium chloride solution.
- sterile, fixed oils are conventionally employed as a solvent or suspending medium.
- any bland fixed oil can be employed including synthetic mono- or diglycerides.
- fatty acids such as oleic acid are used in the preparation of injectables.
- the injectable formulations can be sterilized, for example, by filtration through a bacterial-retaining filter, or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved or dispersed in sterile water or other sterile injectable medium prior to use.
- Compositions formulated for parenteral administration may be injected by bolus injection or by timed push, or may be administered by continuous infusion.
- a compound of the present disclosure In order to prolong the effect of a compound of the present disclosure, it may be desirable to slow the absorption of the compound from subcutaneous or intramuscular injection. This may be accomplished by the use of a liquid suspension of crystalline or amorphous material with poor water solubility. The rate of absorption of the compound then depends upon its rate of dissolution that, in turn, may depend upon crystal size and crystalline form. Alternatively, delayed absorption of a parenterally administered compound form is accomplished by dissolving or suspending the compound in an oil vehicle. Injectable depot forms are made by forming microencapsule matrices of the compound in biodegradable polymers such as polylactide-polyglycolide.
- the rate of compound release can be controlled.
- biodegradable polymers include poly(orthoesters) and poly(anhydrides).
- Depot injectable formulations are also prepared by entrapping the compound in liposomes or microemulsions that are compatible with body tissues.
- compositions for rectal or vaginal administration are preferably suppositories which can be prepared by mixing the compounds of this disclosure with suitable non-irritating excipients or carriers such as cocoa butter, polyethylene glycol or a suppository wax which are solid at ambient temperature but liquid at body temperature and therefore melt in the rectum or vaginal cavity and release the active compound.
- suitable non-irritating excipients or carriers such as cocoa butter, polyethylene glycol or a suppository wax which are solid at ambient temperature but liquid at body temperature and therefore melt in the rectum or vaginal cavity and release the active compound.
- Solid dosage forms for oral administration include capsules, tablets, pills, powders, and granules.
- the active compound is mixed with at least one inert, pharmaceutically acceptable excipient or carrier such as sodium citrate or dicalcium phosphate and/or a) fillers or extenders such as starches, lactose, sucrose, glucose, mannitol, and silicic acid, b) binders such as, for example, carboxymethylcellulose, alginates, gelatin, polyvinylpyrrolidinone, sucrose, and acacia, c) humectants such as glycerol, d) disintegrating agents such as agar—agar, calcium carbonate, potato or tapioca starch, alginic acid, certain silicates, and sodium carbonate, e) solution retarding agents such as paraffin, f) absorption accelerators such as quaternary ammonium compounds, g) wetting agents such as, for example, cetyl alcohol
- Solid compositions of a similar type may also be employed as fillers in soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high molecular weight polyethylene glycols and the like.
- the solid dosage forms of tablets, dragees, capsules, pills, and granules can be prepared with coatings and shells such as enteric coatings and other coatings well known in the pharmaceutical formulating art. They may optionally contain opacifying agents and can also be of a composition that they release the active ingredient(s) only, or preferentially, in a certain part of the intestinal tract, optionally, in a delayed manner.
- Examples of embedding compositions that can be used include polymeric substances and waxes.
- Solid compositions of a similar type may also be employed as fillers in soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high molecular weight polyethylene glycols and the like.
- the active compounds can also be in micro-encapsulated form with one or more excipients as noted above.
- the solid dosage forms of tablets, dragees, capsules, pills, and granules can be prepared with coatings and shells such as enteric coatings, release controlling coatings and other coatings well known in the pharmaceutical formulating art. In such solid dosage forms the active compound may be admixed with at least one inert diluent such as sucrose, lactose or starch.
- Such dosage forms may also comprise, as is normal practice, additional substances other than inert diluents, e.g., tableting lubricants and other tableting aids such a magnesium stearate and microcrystalline cellulose.
- additional substances other than inert diluents e.g., tableting lubricants and other tableting aids such a magnesium stearate and microcrystalline cellulose.
- the dosage forms may also comprise buffering agents. They may optionally contain opacifying agents and can also be of a composition that they release the active ingredient(s) only, or preferentially, in a certain part of the intestinal tract, optionally, in a delayed manner. Examples of embedding
- compositions that can be used include polymeric substances and waxes.
- Dosage forms for topical or transdermal administration of a compound of this disclosure include ointments, pastes, creams, lotions, gels, powders, solutions, sprays, inhalants or patches.
- the active component is admixed under sterile conditions with a pharmaceutically acceptable carrier and any needed preservatives or buffers as may be required.
- Ophthalmic formulation, ear drops, and eye drops are also contemplated as being within the scope of this disclosure.
- the present disclosure contemplates the use of transdermal patches, which have the added advantage of providing controlled delivery of a compound to the body.
- Such dosage forms can be made by dissolving or dispensing the compound in the proper medium.
- Absorption enhancers can also be used to increase the flux of the compound across the skin. The rate can be controlled by either providing a rate controlling membrane or by dispersing the compound in a polymer matrix or gel.
- compositions for use in the method of the disclosure may be formulated in unit dosage form for ease of administration and uniformity of dosage.
- unit dosage form refers to a physically discrete unit of agent appropriate for the subject to be treated. It will be understood, however, that the total daily usage of the compounds and compositions of the present disclosure will be decided by the attending physician within the scope of sound medical judgment.
- a unit dosage form for parenteral administration may be in ampoules or in multi-dose containers.
- the disclosure includes a kit, comprising (i) a first composition comprising, as an active agent, a Raf inhibitor or a pharmaceutically salt thereof; and (ii) a second composition comprising, as an active agent, an Aurora kinase inhibitor or a pharmaceutically acceptable salt thereof; and instructions for administering the first composition in combination with the second composition.
- the disclosure includes a kit, comprising (i) a first composition comprising, as an active agent, a Raf inhibitor or a pharmaceutically salt thereof; and (ii) a second composition comprising, as an active agent, an Aurora kinase inhibitor or a pharmaceutically acceptable salt thereof when used to treat cancer in a subject; and instructions for administering the first composition in combination with the second composition.
- Vemurafenib (Roche) was approved by the United States Food and Drug Administration (FDA) for treatment of melanoma patients with B-Raf V600E mutation. More recently, dabrafenib (B-Raf inhibitor) and trametinib (ME inhibitor) were approved for patients with B-Raf V600E positive melanoma. Both drugs significantly improved the median progression-free survival compared with chemotherapy in Phase 3 studies. As is the case with vemurafinib, however, these responses are considered short-lived (Lancet (2012;380:358-365), N Engl J Med 2012; 367:107-114). Similar to many other targeted therapies, the acquired resistance to B-Raf inhibition presents a therapeutic challenge to long-term survival benefit in this patient population.
- FDA United States Food and Drug Administration
- B-Raf specific inhibitors including vemurafenib and its close analogue N-[3-(5- chloro- lH-pyrrolo[2,3 -b]pyridine-3 -carbonyl)-2,4-difluorophenyl]propane- 1 -sulfonamide (PLX4720; a commercially available selective B-Raf inhibitor) were demonstrated to induce paradoxical pathway activation through dimerization with other Raf isoforms in a B-Raf wild type background, Hatzivassiliou G, et al.
- Vemurafenib is believed to activate the Raf/MEK/ERK pathway through binding B- Raf wild type and stimulating B-Raf-C-Raf dimerization.
- This paradoxical pathway activation by B-Raf specific inhibition is believed to be a major reason of skin side effects (such as squamous cell carcinoma) in some melanoma patients treated with vemurafenib.
- Vemurafenib is not approved for treatment of cancer patients with B-Raf wild type genetic background due to its paradoxical pathway activation activity in mis genetic background.
- Compound A is a Raf kinase inhibitor inhibiting the isoforms of Raf proteins including B-Raf, C- Raf, and B-Raf V600E mutation (see Example 1). Due to its pan-Raf activities, Compound A is active against tumor cells with MAPK pathway activation by upstream signaling such as N-Ras mutation and K- Ras mutation, both with B-Raf wild type genetic background.
- Compound A has the potential for treating cancer patients with B-Raf mutation (such as melanoma, colorectal, lung, ovarian and thyroid carcinoma) or N-Ras mutation, B-Raf wild type (such as melanoma, AML, CML, ALL, CLL, liver cancer), (Schubbert et al, Nature Reviews Cancer, 2007, 7: 295; Pylayeva-Gupta et al, Nature Reviews Cancer, 2011, 11: 761).
- Compound A is also active against melanoma tumor cells which developed resistance to vemurafenib. Therefore, it is believed that the Compound A, in combination with an Aurora kinase inhibitor, will be effective for skin cancer patients who have failed vemurafenib or other B-Raf inhibitors.
- the present disclosure relates to methods for determining whether to treat a subject suffering from cancer with a pharmaceutical composition decribed herein, said method comprising:
- step b) identifying whether the at least one characteristic measured in step a) is informative for outcome upon treatment with the pharmaceutical composition
- the informative characteristic indicates that the tumor cells comprise at least one marker gene with B-Raf and/or N-Ras mutational status that indicates a favorable outcome to treatment with the pharmaceutical composition.
- the present disclosure relates to methods of treating a subject suffering from cancer by administering to the subject a pharmaceutical composition decribed herein, said method comprising: a) measuring at least one characteristic of at least one or more B-Raf and/or N-Ras markers associated with gene mutation in a subject sample comprising tumor cells;
- step b) identifying whether the at least one characteristic measured in step a) is informative for outcome upon treatment with the pharmaceutical composition; and c) determining to treat the subject with the pharmaceutical composition if the informative characteristic indicates that the tumor cells comprise at least one marker gene with a B-Raf and/or N-Ras mutational status that indicates a favorable outcome to treatment with the pharmaceutical composition.
- the present disclosure relates to methods for determining an increased likelihood of
- pharmacological effectiveness of treatment by a pharmaceutical composition in a subject diagnosed with cancer comprising: subjecting a nucleic acid sample from a cancer (tumor) sample from the subject to B-Raf and/or N-Ras mutational testing or PCR, wherein the presence of at least one mutation in B-Raf and/or N-Ras gene indicates an increased likelihood of pharmacological effectiveness of the treatment.
- the present disclosure relates to methods for treating a subject suffering from cancer by administering to a subject a pharmaceutical composition described herein, said method comprising:
- nucleic acid sample from a cancer (tumor) sample from the subject to B-Raf and/or N-Ras mutational testing or PCR, wherein the presence of at least one mutation in B-Raf and/or N-Ras gene indicates an increased likelihood of pharmacological effectiveness of the treatment.
- the present disclosure relates to a method of treating a subject having cancer, said method comprising:
- a mutation in a marker can be identified by sequencing a nucleic acid, e.g., a DNA, RNA, cDNA or a protein correlated with the marker gene, e.g., a genotype marker gene, e.g., B- Raf or N-Ras.
- a nucleic acid primer can be designed to bind to a region comprising a potential mutation site or can be designed to complement the mutated sequence rather than the wild type sequence.
- Primer pairs can be designed to bracket a region comprising a potential mutation in a marker gene.
- a primer or primer pan- can be used for sequencing one or both strands of DNA corresponding to the marker gene.
- a primer can be used in conjunction with a probe, e.g., a nucleic acid probe, e.g., a hybridization probe, to amplify a region of interest prior to sequencing to boost sequence amounts for detection of a mutation in a marker gene.
- a probe e.g., a nucleic acid probe, e.g., a hybridization probe
- regions which can be sequenced include an entire gene, transcripts of the gene and a fragment of the gene or the transcript, e.g., one or more of exons or untranslated regions or a portion of a marker comprising a mutation site.
- mutations to target for primer selection and sequence or composition analysis can be found in public databases which collect mutation information, such as Database of Genotypes and Phenotypes (dbGaP) maintained by the National Center for Biotechnology Information (Bethesda, MD) and Catalogue of Somatic Mutations in Cancer (COSMIC) database maintained by the Wellcome Trust Sanger Institute (Cambridge, UK).
- dbGaP Database of Genotypes and Phenotypes
- COSMIC Catalogue of Somatic Mutations in Cancer
- Sequencing methods are known to one skilled in the art. Examples of methods include the Sanger method, the SEQUENOMTM method and Next Generation Sequencing (NGS) methods.
- the Sanger method comprising using electrophoresis, e.g., capillary electrophoresis to separate primer- elongated labeled DNA fragments, can be automated for high-throughput applications.
- the primer extension sequencing can be performed after PCR amplification of regions of interest.
- Software can assist with sequence base calling and with mutation identification.
- SEQUENOMTM MASSARRAY® sequencing analysis (San Diego, CA) is a mass-spectrometry method which compares actual mass to expected mass of particular fragments of interest to identify mutations.
- NGS technology also called “massively parallel sequencing” and “second generation sequencing” in general provides for much higher throughput than previous methods and uses a variety of approaches (reviewed in Zhang et al. (2011) J Genet. Genomics 38:95-109 and Shendure and Hanlee (2008) Nature Biotech. 26: 1135-1145).
- NGS methods can identify low frequency mutations in a marker in a sample.
- Some NGS methods see, e.g., GS-FLX Genome Sequencer (Roche Applied Science, Branford, CT), Genome analyzer (Illumina, Inc.
- SOLIDTM analyzer (Applied Biosy stems, Carlsbad, CA), Polonator G.007 (Dover Systems, Salem, NH), HELISCOPETM (Helicos Biosciences Corp., Cambridge, MA)) use cyclic array sequencing, with or without clonal amplification of PCR products spatially separated in a flow cell and various schemes to detect the labeled modified nucleotide that is incorporated by the sequencing enzyme (e.g., polymerase or ligase).
- the sequencing enzyme e.g., polymerase or ligase.
- primer pairs can be used in PCR reactions to amplify regions of interest. Amplified regions can be ligated into a concatenated product.
- Clonal libraries are generated in the flow cell from the PCR or ligated products and further amplified ("bridge” or “cluster” PCR) for single-end sequencing as the polymerase adds a labeled, reversibly terminated base that is imaged in one of four channels, depending on the identity of the labeled base and then removed for the next cycle.
- Software can aid in the comparison to genomic sequences to identify mutations.
- Another NGS method is exome sequencing, which focuses on sequencing exons of all genes in the genome. As with other NGS methods, exons can be enriched by capture methods or amplification methods.
- DNA e.g., genomic DNA corresponding to the wild type or mutated marker can be analyzed both by in situ and by in vitro formats in a biological sample using methods known in the art.
- DNA can be directly isolated from the sample or isolated after isolating another cellular component, e.g., RNA or protein. Kits are available for DNA isolation, e.g., QIAAMP® DNA Micro Kit (Qiagen, Valencia, CA). DNA also can be amplified using such kits.
- RNA corresponding to the marker can be analyzed both by in situ and by in vitro formats in a biological sample using methods known in the art.
- Many expression detection methods use isolated RNA.
- any RNA isolation technique that does not select against the isolation of mRNA can be utilized for the purification of RNA from tumor cells (see, e.g., Ausubel et al, ed., Current Protocols in Molecular Biology, John Wiley & Sons, New York 1987-1999).
- large numbers of tissue samples can readily be processed using techniques well known to those of skill in the art, such as, for example, the single-step RNA isolation process of Chomczynski (1989, U.S. Patent No. 4,843,155).
- RNA can be isolated using standard procedures (see e.g.,
- solutions e.g., trizol, TRI REAGENT®
- kits e.g., a
- RNAse inhibitors may be added to the lysis buffer.
- tRNA transfer RNA
- rRNA ribosomal RNA
- poly(A)+mRNA is eluted from the affinity column using 2 mM EDTA/0.1% SDS.
- a characteristic of a marker in a sample can be assessed by any of a wide variety of well known methods for detecting or measuring the characteristic, e.g., of a marker or plurality of markers, e.g., of a nucleic acid (e.g., RNA, mRNA, genomic DNA, or cDNA) and/or translated protein.
- a sample e.g., a tumor biopsy
- a nucleic acid e.g., RNA, mRNA, genomic DNA, or cDNA
- Non-limiting examples of such methods include immunological methods for detection of secreted, cell-surface, cytoplasmic, or nuclear proteins, protein purification methods, protein function or activity assays, nucleic acid hybridization methods, optionally including "mismatch cleavage" steps (Myers, et al. (1985) Science 230:1242) to digest mismatched, i.e. mutant or variant, regions and separation and identification of the mutant or variant from the resulting digested fragments, nucleic acid reverse transcription methods, and nucleic acid amplification methods and analysis of amplified products.
- These methods include gene array/chip technology, RT-PCR, TAQMAN® gene expression assays (Applied Biosystems, Foster City, CA), e.g., under GLP approved laboratory conditions, in situ hybridization, immunohistochemistryj
- FISH fluorescence in situ hybridization
- FACS analyses northern blot, southern blot, INFINIUM® DNA analysis Bead Chips (Illumina, Inc., San Diego, CA), quantitative PCR, bacterial artificial chromosome arrays, single nucleotide polymorphism (SNP) arrays (Affymetrix, Santa Clara, CA) or cytogenetic analyses.
- SNP single nucleotide polymorphism
- Examples of techniques for detecting differences of at least one nucleotide between two nucleic acids include, but are not limited to, selective oligonucleotide hybridization, selective amplification, or selective primer extension.
- oligonucleotide probes can be prepared in which the known polymorphic nucleotide is placed centrally (allele- or mutant-specific probes) and then hybridized to target DNA under conditions which permit hybridization only if a perfect match is found (Saiki et al. (1986) Nature 324: 163); Saiki et al (1989) Proc. Natl Acad. Sci USA 86:6230; and Wallace et al. (1979) Nucl. Acids Res. 6:3543).
- Such allele specific oligonucleotide hybridization techniques can be used for the simultaneous detection of several nucleotide changes in different polymorphic or mutated regions of N-Ras.
- oligonucleotides having nucleotide sequences of specific allelic variants or mutants are attached to a solid support, e.g., a hybridizing membrane and this support, e.g., membrane, is then hybridized with labeled sample nucleic acid. Analysis of the hybridization signal thus can reveal the identity of the nucleotides of the sample nucleic acid.
- kinase activity of Compound A was determined using a biochemical fluorescence resonance energy transfer (FRET) assay as described in WO 2009/006389.
- FRET biochemical fluorescence resonance energy transfer
- IC50 half maximal inhibitory concentration
- Example 2 In vivo tumor efficacy in NRAS mutated SK-MEL-2 human melanoma xenograft model
- MTV mean tumor volume
- Compound A was formulated in PEG 400 and the resulting suspension was sonicated in a warm water bath until a clear solution was obtained. The 10 mg/mL solution was diluted with 100% PEG 400 for the lower dose.
- Sodium aKsertib was formulated in a half volume of 20% HPBCD in WFI and then diluted to a final volume ( 10% HPBCD/1 % NaHC03 in WFI) with 2% sodium bicarbonate in WFI.
- Tumor measurements [00127] Tumor size and body weight were measured BIW beginning on the first day of treatment.
- Inhibition of tumor growth was determined by calculating the percent TGI (MTV of the vehicle group - MTV of a treated group) / MTV of the vehicle group on Day 20 post treatment initiation.
- Additional endpoints used to evaluate efficacy were: nonspecific deaths, complete tumor response, and the number of tumor-free survivors (TFS), defined as no measurable tumor observed on the last day of data collection prior to study termination (Day 62 post treatment initiation).
- TFS tumor-free survivors
- a complete response (CR) was defined as a decrease in tumor mass to an undetectable size ( ⁇ 32 mm3).
- Yijk is the log 10 tumor value at the jth time point of the kth animal in the ith treatment
- YiOk is the day 0 (baseline) log 10 tumor value in the kth animal in the ith treatment
- dayj was the median- centered time point and (along with day2j) was treated as a continuous variable
- eijk is the residual error.
- a spatial power law covariance matrix was used to account for the repeated measurements on the same animal over time. Interaction terms as well as day2j terms were removed if there were not statistically significant.
- a likelihood ratio test was used to assess whether a given pair of treatment groups exhibited differences which were statistically significant.
- the -2 log likelihood of the full model was compared to one without any treatment terms (reduced model) and the difference in the values was tested using a Chi- squared test.
- the degrees of freedom of the test were calculated as the difference between the degrees of freedom of the full model and that of the reduced model.
- AUCctl is the model-predicted AUC for the control group and was treated as a constant with no variability.
- the standard error of the synergy score was calculated as the square root of the sum of the squared standard erros across groups A. B, and AB.
- the degrees of freedom were estimated using the Welch-Satterthwaite equation.
- a hypothesis test was performed to determine if the synergy score differed from 0.
- P values were calculated by dividing the synergy score by its standard error and tested against a t-distribution (two-tailed) with the above-calculated degrees of freedom.
- the effect was classified into four different categories. It was considered synergistic if the synergy score was less than 0 and additive if the synergy score wasn't statistically different from 0. If the
- synergy score was greater than zero, but the mean AUC for the combination was lower than the lowest mean AUC among the two single agent treatments, then the combination was sub-additive. If the synergy score was greater than zero, and the mean AUC for the combination was greater than the mean AUC for at least one of the single agent treatments, then the combination was antagonistic.
- Interval analysis if requested, involved a specified treatment group and time interval compared with another treatment group and time interval. For a given group, time interval, and animal, the tumor growth rate per day was estimated by
- Rate 100 * (10 ⁇ 1 ⁇ ⁇ - 1) (7)
- ⁇ is the difference in the log 10 tumor volume over the interval of interest
- Dt is the length of the time interval. If one or both of the time points were missing, then the animal was ignored. The mean rates across the animals were then compared to using a two-sided unpaired t-test with unequal variances. There were no adjustments pre-specified for the multiple comparisons and endpoints examined. All P values O.05 were called statistically significant.
- a mouse xenograft model performed as described in the method above, was used to assess the combination effect in vivo of Compound A and alisertib. The detail for this study is shown below in Table 2. The dose listed for alisertib in Table 2 is the amount of the free compound.
- Example 3 In vivo tumor efficacy in B-Raf Mutated human melanoma xenograft model
- mice bearing the proper size xenograft were randomly assigned into one of twelve groups and began treatment with their assigned test materials, either vehicles (100% PEG400 and/or 10% HPpCD + 1% NaHC03 in WFI), and/or test articles: Compound A (12.5 or 50 mg kg), alisertib (10 or 20 mg kg), or the combination of Compound A/alisertib. Test Compounds
- Compound A was formulated in 100% PEG400 (Vehicle 1). Compound A was prepared and stored at room temperature (18 to 25oC).
- Sodium alisertib was formulated in 10% HPpCD plus 1% NaHC03 in water for injection (WFI) (Vehicle 2). Alisertib was prepared and stored at room temperature (18 to 25oC).
- the dose volume for vehicle or compound was 5 mL/kg body weight.
- Tumor size and body weight were measured twice weekly beginning on the day of animal grouping (e.g., Day 0). Animals were terminated when their tumor reached approximately 2000 mm3 and the study was terminated on Day 38 post treatment initiation.
- Inhibition of tumor growth was determined by calculating the percent TGI (MTV of the vehicle group - MTV of a treated group) / MTV of the vehicle group] on Day 21 post treatment initiation.
- a mouse xenograft model performed as described in the method above, was used to assess the combination effect in vivo of Compound A and alisertib. The detail for this study is shown below in Table 4. The dose listed for alisertib is the amount of the free compound.
- d AAUC Statistical analysis was performed with a linear mixed effects regression model. A p value of ⁇ 0.05 was considered significant.
- the B-Raf RGQ PCR Kit v2 combines two technologies, ARMS® and Scorpions®, to detect mutations in real-time PCR assays.
- This assay detects B-Raf V600 mutations V600E (GAG) and V600E complex (GAA), V600D (GAT), V600K (AAG), V600R (AGG).
- the kit detects the presence of the V600E (GAG) and V600E complex (GAA) but does not distinguish between them.
- Scorpions are PCR primer covalently linked to a fluorescently labeled probe (i.e. FAMTM or HEXTM) and a quencher. During PCR when the probe is bound to the amplicon, the fluorophore and quencher become separated resulting in an increase in fluorescence signal.
- FAMTM or HEXTM fluorescently labeled probe
- the B-Raf RGQ PCR Kit v2 comprises a two-step procedure.
- the control assay is performed to assess the total amplifiable B-Raf DNA in a sample.
- both the mutation and control assays are performed to determine the presence or absence of mutant DNA.
- the control assay labeled with FAM, is used to assess the total amplifiable B-Raf DNA in a sample.
- the control assay amplifies a region of exon 3 of the B-Raf gene.
- the primers and Scorpion probe are designed to amplify independently of any known B-Raf polymorphisms.
- Each mutation assay contains a FAM-labeled Scorpion probe and an ARMS primer for discrimination between the wild-type DNA and a specific mutant DNA.
- Scorpions real-time assays uses the number of PCR cycles necessary to detect a fluorescent signal above a background signal as a measure of the target molecules present at the beginning of the reaction. The point at which the signal is detected above background fluorescence is called the 'cycle threshold' (Ct).
- Sample ACt values are calculated as the difference between the mutation assay Ct and control assay Ct from the same sample. Samples are classed as mutation positive if they give a ACt less than the Cut-Off ACt value for that assay. Above this value, the sample either contains less than the percentage of mutation able to be detected by the kit (beyond the limit of the assays), or the sample is mutation negative.
- the ACt values are calculated as follows, ensuring that the mutation and control Ct values are from the same sample:
- Sample control Ct can range between 27-33
- Sample mutation Ct can range between 15-40
- Acceptable ACt for the mutant call is ⁇ 6 or 7
- N-Ras assay for the detection of N-Ras Q61 mutations includes:
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EP4065122A4 (en) * | 2019-11-27 | 2023-12-27 | Day One Biopharmaceuticals, Inc. | Solid dispersion of pan-raf kinase inhibitor |
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US7666862B2 (en) * | 2003-08-15 | 2010-02-23 | Merck & Co., Inc. | Mitotic Kinesin Inhibitors |
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US9216170B2 (en) * | 2012-03-19 | 2015-12-22 | Hoffmann-La Roche Inc. | Combination therapy for proliferative disorders |
US20130303519A1 (en) * | 2012-03-20 | 2013-11-14 | Millennium Pharmaceuticals, Inc. | Methods of treating cancer using aurora kinase inhibitors |
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